The Case of the Mystery Cruise

Mary-Kate and Ashley are at Sea World with the parents, who are hard at work creating a computer program that will let humans speak with dolphins. The twins can't seem to find a mystery — until they stumble upon a mysterious body and a Lady in Black who leads them on a wild goose chase!

• Author
• Carol Thompson

• Format
• paperback

• Pages
• 80

• Series
• The Adventures of Mary-Kate and Ashley

• Publisher
• Scholastic

• Language
• english

• ISBN
• 9780590863704

• Genres
• mystery, childrens, juvenile

• Release date
• 1996